Application Effect Of Chelated Microelement Fertilizers Of Zinc And Manganese

The effects of zinc fertilizer (Super-Zn, Black-Zn, Pro-Zn, Awaken and Awaken-plus) and manganese fertilizer (Super-Mn and Black-Mn) were studied on growth of lettuce, wheat and maize seedlings through radicle pour and foliar spray. The purpose was provide guidance for the use of the zinc and manganese fertilizer in agricultural production for reducing use dosage of the zinc and manganese fertilizer, improving use rats of the zinc and manganese fertilizer, and increasing crop yield and quality.1. When Super-Zn, Black-Zn and Pro-Zn were foliarily sprayed in lettuce and wheat seedlings, Super-Zn at 0.0325% showed the best performance in lettuce seedlings and Pro-Zn at 0.065% was the best in wheat seedlings, resulting in 36% and 13.6%increase of plant dry weight, respectively. While Super-Zn, Black-Zn and Pro-Zn were radicly poured in wheat seedlings, Super-Zn at 0.01625% showed the highest increase of the plant dry weight by 16.8%. When Awaken and Awaken-plus were sprayed in wheat and maize seedlings, both Awaken and Awaken-plus at 240-times dilution caused the increases of plant dry weight in wheat seedlings by 10.3% and 16.3% respectively. While Awaken and Awaken-plus were radicly poured in wheat seedlings, Awaken-plus at a 480-times dilution increased the plant dry weight by 31.7%.2. When Black-Mn and Super-Mn were sprayed in lettuce, wheat and maize seedlings, Black-Mn at 0.02% showed the best performance in lettuce seedlings by a 18.6% increase of plant dry weight; Super-Mn at 0.04% is the best in wheat seedlings by by a 13.8% increase of plant dry weight; Black-Mn at 0.01% showed the best by a 12.0% increase of plant dry weight. While Black-Mn and Super-Mn were radicly poured in wheat seedlings, t Super-Mn at 0.04% caused an increase of plant dry weight by 14.1%.3. Spray of Sugar-alcohol Zinc solutions at 180,120 and 60 times dilution, caused 21%,28.8% and 2% increase of plant dry weight, respectively, in maize and soybean seedlings. Spray of Sugar-alcohol Manganese at 60,120 and 60 times dilution increased the plant dry weight by 25.5%,36.6% and 7.5%, respectively, in maize and soybean seedlings. Both Sugar-alcohol Zinc and Sugar-alcohol Manganese showed little promotive effect in cotton seedlings.